Microstructure, cold rolling, heat treatment, and mechanical properties of Mg-Li alloys

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	Microstructure, cold rolling, heat treatment, and mechanical properties of Mg-Li alloys
其他题名	Microstructure, cold rolling, heat treatment, and mechanical properties of Mg-Li alloys
	Ji Haibin; Yao Guangchun; Li Hongbin
	2008
发表期刊	JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
ISSN	1005-8850
卷号	15 期号:4 页码:440-443
摘要	The magnesium-lithium (Mg-Li) alloy exhibits two phase structures between 5.7wt% and 10.3wt% Li contents, consisting of the alpha (hcp) Mg-rich and the beta (bcc) Li-rich phases, at room temperature. In the experiment, Mg-5Li-2Zn, Mg-9Li-2Zn, Mg-16Li-2Zn, Mg-22Li-2Zn, Mg-5Li-2Zn-2Ca, Mg-9Li-2Zn-2Ca, Mg-16Li.-2Zn-2Ca, and Mg-22Li-2Zn-2Ca (wt%) were melted. During the melting process, the flux, which was composed of lithium chloride (LiCl) and lithium fluoride (LiF) in the proportion of 3:1 (mass ratio) and argon gas were used to protect the alloys from oxidation. The microstructure, mechanical properties, and cold-rolling workability of the wrought alloys were studied. The crystal grain of the alloys (adding Ga) is fine. The hardness of the studied alloys decreases with an increase in element Li. The density of the studied alloys is in the range of 1.187 to 1.617 g/cm(3). The reduction of the Mg-16Li-2Zn and Mg-22Li-2Zn alloys can exceed 85% at room temperature. The Mg-9Li-2Zn-2Ca alloy was heat treated at 300 degrees C for 8, 12, 16, and 24 h, respectively. The optimum heat treatment of the Mg-9Li-2Zn-2Ca alloy is 300 degrees Cx12h by metallographic observation and by studying the mechanical properties of the alloys. (c) 2008 University of Science and Technology Beijing. All rights reserved.
其他摘要	The magnesium-lithium (Mg-Li) alloy exhibits two phase structures between 5.7wt% and 10.3wt% Li contents, consisting of the a (hcp) Mg-rich and the β (bee) Li-rich phases, at room temperature. In the experiment, Mg-5Li-2Zn, Mg-9Li-2Zn,Mg-16Li-2Zn, Mg-22Li-2Zn, Mg-5Li-2Zn-2Ca, Mg-9Li-2Zn-2Ca, Mg-16Li-2Zn-2Ca, and Mg-22Li-2Zn-2Ca (wt%) were melted.During the melting process, the flux, which was composed of lithium chloride (LiCI) and lithium fluoride (LiF) in the proportion of 3:1 (mass ratio) and argon gas were used to protect the alloys from oxidation. The mierostructure, mechanical properties, and cold-rolling workability of the wrought alloys were studied. The crystal grain of the alloys (adding Ga) is fine. The hardness of the studied alloys decreases with an increase in element Li. The density of the studied alloys is in the range of 1.187 to 1.617 g/cm3 The reduction of the Mg-16Li-2Zn and Mg-22Li-2Zn alloys can exceed 85% at room temperature. The Mg-9Li-2Zn-2Ca alloy was heat treated at 300℃ for 8, 12, 16, and 24 h, respectively. The optimum heat treatment of the Mg-9Li-2Zn-2Ca alloy is 300~Cx12h by metallographic observation and by studying the mechanical properties of the alloys.
关键词	Mg-Li alloy Mg-Li-Zn alloy cold rolling heat treatment microstructure mechanical properties
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:3383319
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/152954
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Ji Haibin,Yao Guangchun,Li Hongbin. Microstructure, cold rolling, heat treatment, and mechanical properties of Mg-Li alloys[J]. JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING,2008,15(4):440-443.
APA	Ji Haibin,Yao Guangchun,&Li Hongbin.(2008).Microstructure, cold rolling, heat treatment, and mechanical properties of Mg-Li alloys.JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING,15(4),440-443.
MLA	Ji Haibin,et al."Microstructure, cold rolling, heat treatment, and mechanical properties of Mg-Li alloys".JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING 15.4(2008):440-443.